Deforming force is a force that causes a change in the structure of an object when applied. When a force is applied to a material body, the usual location of its molecules changes, resulting in a modification or alteration in the length, volume, or body shape. Examples of deforming force include a bent pencil, mild steel rods, and iron rods. There are two types of deformation: elastic and plastic. Elastic deformation refers to temporary deformation, while plastic deformation refers to permanent deformation.
Restoring force, on the other hand, is the force that restores the dimensions and shape of the body when deformation forces are reduced. It concentrates on the equilibrium in a system by needed compression and stretch. An example of restoring force is the motion of a spring.
